For many events, the location includes a room name. Schema.org should support a way to specify the room.

In some cases, rooms have numeric names containing floor and room number. For example, MIT's 26-100.

In other cases, the room name has no location information embedded in it. For example, Stanford's Berg Hall within the Li Ka Shing Center. Schema.org would need separate properties if we want to get to the level of floor number, etc.